In one day, more than 3,000 people donated money -- from as little $5 to thousands -- towards the billboard campaign, which has catapulted the plan from simply reinstalling one billboard, to putting one in every major city around the country.

Madigan is planning to do just that, with three already booked in Melbourne and two in Sydney. Billboards will begin going up from Friday through to Australia Day, starting in Collingwood, Preston, Springvale, Endeavour Hills and Yarraville.

The creative director has received her fair share of hate mail, but the "heartwarming" response from Australians proves to Madigan bigots are "the small minority".

"I was incredibly frustrated because you've got the same people who complain that Muslims don't assimilate who are the ones complaining about a picture of two Australian Muslim girls holding Australian flags, celebrating Australia day," Madigan told HuffPost Australia.

"It's just like you're damned if you do, damned if you don't. It's shear bigotry. It really just took off all the layers and exposed it for what it was."

The girls in the photo have had some faith restored, however Madigan said they were initially made to feel "like they and their culture are so offensive to people, that they went to that sort of length."

"That's an awful thing for young girls to have to go through and that's why it was so important, I think, to show them that all Australians aren't like that."